Add: Stock tracker, Jenkins CI/CD pipeline, linting config

- stock_tracker.py: Portfolio tracking with P&L calculations
- Jenkinsfile: Full CI/CD with linting, testing, deployment
- test_requirements.txt: Testing dependencies
- .pylintrc: Linting configuration
- requirements.txt: Production dependencies

Features:
- Stock & crypto portfolio tracking
- Investment guideline checks
- Unit tests & linting pipeline
- Integration tests for Oracle/Telegram/Gitea
- Staging & Production deployment stages

.pylintrc

@@ -0,0 +1,27 @@
+[MASTER]
+ignore=venv,__pycache__,node_modules,build,dist
+max-line-length=120
+disable=C0114,C0115,C0116,R0801
+
+[FORMAT]
+max-line-length=120
+
+[DESIGN]
+max-args=10
+max-locals=25
+max-statements=100
+
+[BASIC]
+good-names=i,j,k,ex,Run,_
+
+[IMPORTS]
+known-standard-library=os,sys,json,datetime,requests
+known-third-party=telegram,flask,oracledb,openai
+
+[MESSAGES CONTROL]
+extension-pkg-allow-list=telegram,oracledb
+
+[COVERAGE]
+coverage-append=true
+coverage-report=term-missing
+coverage-report=html